Trader consensus on Polymarket strongly favors a Tokyo high of 15°C (65%) on March 18, driven by Japan Meteorological Agency (JMA) forecasts predicting a daytime peak near 15°C under a stable high-pressure ridge fostering mild early spring conditions. Ensemble models from ECMWF and GFS align within a 14-16°C range, reflecting historical March 18 averages of 13-14°C boosted by recent urban heat island amplification and southerly winds. Yesterday's 14°C high and low diurnal variability support this clustering, while slim odds for 17°C+ acknowledge rare convective risks. Traders eye afternoon JMA updates for final resolution criteria amid model convergence.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Tokyo on March 18?
Highest temperature in Tokyo on March 18?
15°C 67%
16°C 26%
14°C 8%
17°C 1.5%
$45,490 Vol.
$45,490 Vol.
13°C
<1%
14°C
8%
15°C
67%
16°C
26%
17°C
2%
18°C
1%
19°C or higher
<1%
15°C 67%
16°C 26%
14°C 8%
17°C 1.5%
$45,490 Vol.
$45,490 Vol.
13°C
<1%
14°C
8%
15°C
67%
16°C
26%
17°C
2%
18°C
1%
19°C or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Tokyo Haneda Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 14, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Trader consensus on Polymarket strongly favors a Tokyo high of 15°C (65%) on March 18, driven by Japan Meteorological Agency (JMA) forecasts predicting a daytime peak near 15°C under a stable high-pressure ridge fostering mild early spring conditions. Ensemble models from ECMWF and GFS align within a 14-16°C range, reflecting historical March 18 averages of 13-14°C boosted by recent urban heat island amplification and southerly winds. Yesterday's 14°C high and low diurnal variability support this clustering, while slim odds for 17°C+ acknowledge rare convective risks. Traders eye afternoon JMA updates for final resolution criteria amid model convergence.
Experimental AI-generated summary referencing Polymarket data · Updated
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